Title:
Garage door operators
Document Type and Number:
United States Patent 2755081

Inventors:
Clarence, Johnson
Rasoletti, Julius E.
Publication Date:
07/17/1956
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Referenced by:
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Assignee:
Clarence, Johnson
Rasoletti, Julius E.
Primary Class:
160/188
Other Classes:
188/171, 49/358, 188/77R
International Classes:
E05F15/16
US Patent References:
1424237Gear rack
1584289Sliding door
1676502Device for moving freight-car doors
1743943Gear substitute
1745990Automatic stopping and reversal of electromechanically-operated doors and the like
1817909Electric door control
1862860Door operating mechanism
1868149Automatic door opener and closer
1878796Automatic door
1927559Elevator door operating mechanism
1940191Opening and closing device for car doors
1940485Door operating mechanism
1962475Overhead door control means
2048514Operator for elevator gates
2070058Operator for roll top doors
2221216Air operated device
2295877
2378262Door or like operating device
2401082Moving apparatus and control therefor
2533116Control system for doors
2568808Automatic overhead door
2574760Door operator
2628090Electric garage door operator
2628831Door operating mechanism


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